Feature Request: Handle disks as datacenter asset

### Real life situation
In most cases, disks are always assigned to the same server. In this case, the current way the disks can be added to a hardware as a component is sufficient.
But due to server rebuilds, migrations, customer requests, etc. the disks might change place, migrated from one server to another.
Also disk replacements cannot be documented *fully*, as the different disks may have different warranty expiry etc.

### Expected behavior
It would be nice to handle disks as a separate asset, which can then be assigned to a hardware asset.
While creating a new disk asset, the following information can be entered:

- Manufacturer (e.g. Western Digital)
- Model (e.g. WD Blue 3D)
- Product Number / PN
- Speed (e.g. 7200 rpm, SSD etc)
- Serial Number / SN
- Manufacturing date
- Purchase date
- Warranty date
- Firmware

This would also allow a "history" of each drive, e.g. migrated, replaced etc.

### Actual behavior

Disks can only be added as a component of a hardware asset, but have no further information or historical events assigned to it.

### Environment

* Ralph version: 20211112.1
* Operating system: Ubuntu 18.04
* Method of installation: Deb package? Manual installation? Docker? DEB